When I was a kid, the next door neighbor lit a cherry bomb in his basement and then realized he had no place to throw it, SO HE KEPT IT IN HIS HANDS... I'll never forget the sight of his his poor mother running with two fingers on a towel to the ER so they could sew them back on!
So Funny...The Greek kid in my neighborhood did the same thing. he had a secret decoder ring that had a small slot in it to fit a firecracker. Well Peter put that firecracker into his cool ring and lit it. after the first 3-4 seconds as the fuse wound down Peter realized that the Firework was not leaing his ring, So the only impulsive move he could make was covering his ears...with the firecracker still attached to his finger. BOOM. He ended up covered in paper and his ears ringed for weeks.